Crown 60W Megaphone Siren, Whistle and Voice Recorder with Bluetooth USB/SD Aux In Range 60 Meters 300 x 425mm without Batteries 8pcs Type C SR-106UBThe Crown 60W Megaphone SR 106UB delivers powerful sound with siren, whistle, and voice recording functions, ensuring clear communication up to 60 meters. Equipped with Bluetooth, USB, SD, and Aux inputs, it offers versatile playback options. Its compact 300 x 425mm design is ideal for events, safety alerts, and public announcements. Note: Batteries not included. Perfect for those seeking reliability and multi functionality in one portable device.